Fafer making machine



Oct. 16, 1928. 1,687,847

R. E. READ V PAPER MAKING MACHI NE Filed Jan. e, 192'? 2 sheets-sheet 1IN VEN TOR.

AT ORNEYS.

1,687,847 R. E. READ PAPER MAKING MACHI NE Oct. 16, 1928.

Filed Jan. 6, 1927 2 Sheets-Sheet 2 ORNEYS.

Patented Oct. 16, 1928.

UNITED STATES PATENT OFFICE.

ROBERT E. READ, OF WHITE PLAINS, NEW YORK, ASSIGNOR TO INTERNATIONALPAPER COMPANY, A CORPORATION OF NEW YORK.

PAPER-MAKING MACHINE.

Application filed i January This invention relates to paper makingmachines and particularly COHCGIIIQCl'Wlth the means for establishingthe travel of the.

paper web through the machine in starting the operation of the machinein the first instance, or in reestablishing the travel of the web in theevent of the breakage or parting ofthe same. It is customary in theseopera tions to form a relatively narrow lead strip on the web byincising the same longitudinally near one edge, and to start the travelof the lead strip through the machine, and when the travel of the samehas become fully established, to gradually widen out the strip to thefull width of the web. In this operation there is a'tendency of the leadstrip to adhere to the rotary roll of the machine, with which it is forthe time being in contact and thus fail to follow its proper coursethrough the machine. For instance in the travel of the strip through thepresses, the strip is liable to adhere to and follow around with theupper press roll instead of passing to the conveying felt below, as itshould.

The present invention is designed to overcome this objectionable actionand to insure that, in the event of the lead strip adhering to the roll,it may be conveniently'detached therefrom and directed to its properpath of travel, and with this end in view the invention consists in theprovision of a device associated with the roll in the machine to whichthere is a tendency of the lead strip to adhere, which device may beoperated to sever the adhering lead strip crosswise and cause itssevered end to be lifted or turned away from the roll, and incombination with said device, a fluid blast device in position LO directits blastagainst the roll at such an angle, and in such relation to theend of the lead strip, that the latter will be stripped from the rolland directed to its proper path of travel, in the particular applicationofthe invention illustrated, to the conveying felt below.

The invention also consists of the method of establishing the travelofthe paper web through the machine, involved in the operation of myimproved mechanism.

In the specification to follow, the invention will be described indetail, and the novel features thereof will bepointed out in theappended claims. i

In the accompanying drawin sz Figi l is a side elevation of one m: the

e, 1927. Serial No. 159,253.

presses of a paper making machine showing my invention applied thereto.

Fig. 2 is a front elevation of the same.

Fig. 3 is a view similar to Fig. 1, but on an enlarged scale, to betterindicate the angle of impingement ot the flu d blast against the roll.

Referring to the drawings:

In the accompanying drawings I have shown my invention by way of examplein connection with the upper press roll of one of the presses of a papermaking machine, to insure the passage of the lead strip to the conveyingfelt passing between said roll and the lower press roll, but it willbemanifest to those skilled in the art that the invention is .not limitedto this particular part of the machine, but is applicable as well toother locations. for instance, to the rolls of the calender stack, andto other parts or members of the machine to which the lead strip isliable to adhere.

The press unit shown comprises as usual an upper press roll 1, a lowerpress roll 2, and an endless conveyor felt or traveling member 3 passingbetween said rolls and suitably guided by the usual guiding rolls, allas well known in this art.

In carrying out my invention, I provide a device for cutting or severingthe lead strip through transversely, the severed end 9 of the strip, onaccount of the continued travel of the roll, presenting an oblique lineor edge. The cutting finger 5 is fixed to the inner end of an operatingrod 6 mounted to slide horizontally in a fixed bearing 7 at the side ofthe press roll, which rod may also he turned in its bearing to swing theactive end of the finger to and from the roll; and the outer end of therod is providedv with a handle 8 for positioning and operating thecutter.

As a result of the mounting ofthe cutting finger as described, it may,by a turning mo tion of the handle 8, be swung in its bearing 7 toadjust its cutting point; the operative or inoperative relation to thepress roll, and by shittii'ig thehandle inwardly and outwardly, thefinger may be first positioned at the inner edge or the lead strip andtheir drawn-outwardly across the same and thereby cut the striptransversely, for the purpose presently to be described.

Arranged above the line of action of the cutting finger, so toaet on theend of the severed lead strip, is a fixed fluid blast de vice 9, in theform of a horizontal pipe supplied with con'ipressed air from a suitablesource by a supply pipe 11 leading from the outer end oi the pipe 10 andhaving a cut-oil valve 11 therein in order to enable the blast'to'beturned oil or on as desired. In the present inst ance the pipe 10 isformed 7 with a horizontal. lineo't air nozzles 18 communicating withthe into or of the pipe and directed towards the upper press roll, sothat thejets of air issuing from the nozzles, will impinge against theroll in a horizontal line, which, by reason of the number anddisposition of the nozzles extends the full width of the lead strip asbest shown in Fig. 2. The angle of impingement ot the line of jets onthe roll, and the relation of said jets to the end of the lead stripsevered by the cutter, is such that the air currents rebounding from thesurface of the roll, will act to throw the severed end of he lead stripdownwardly onto the conveying felt, as shown in Fig. 1.

' Under the normal conditions ot operation of the paper making machine,with the paper web traveling its proper path, the air tothe' blastdevice is cut on, and the cutting finger is swung down away from theroll as shown by dotted lines in Fig. 1 and is drawn to its outerposition as shown by full lines in Fig. 2. In the use of the mechanism,when the leachstrip, previously formed on the web by incising the samelongitudinally, adheres to and is carried upwardly withthe upper pressroll, the attendant first turns on the air to "the blast device, thenpushes the cutter to its inner position shown by dotted lines in Fig. 2,and then by a turning motion of the handle, swings the active end of thefinger into contact with the press roll, at a, pointjust then drawnoutwardly, with the result that its active cutting point engaging thelead'strip, will sever the same transversely. ting action'at the inneredge of the strip, the

' continued travel of the roll will force the adhering severed endagainst the cutter and said end will be thereby li'l'ted andturned awayfrom the surface of the roll, and the air currents from the nozzlesrebounding from the surface of the roll, will act behind the li'l'tede'ndof the strip and will peel the same from the roll, and at the sametime throw the end of the strip down towards and on the conveying feltas shown inFig. 1.

At the beginning of the cut- It will be observed on reference to Figs. 1and 3' that the angle of impingement of the ir jets to the surface ofthe roll is such that the air currents will rebound from the roll at asharp acute angle, and this is a very important feature of theinvention,

since by reason of the particular angular renism has been operated asdescribed in conncction with one press, the air blast of that press willbe kept on until the travel of the strip has been established, as byentering between the rollers of the next press, whereupon the air to thefirst blast will be cut off; it being understood that with the'improvcdmechanism applied at other points in the machine, the air blast is shutelf just as soon as the Uravel of the lead strip is'established andthere is no further danger of the same passing out of its'proper path:

In orderthat the blast device may be moved to an inoperative positionafter the travel of the leadstrip has been established, so that therewill be no danger of the obstruction of the travel of the strip, whichmight occur by reasonof aslight slack in the strip'which at times occurswhere it passes betweenthe rolls, I form the supply pipe 11 by which theblast device is supported, with jointed coupling 14: as shown in Fig; 2,

whereby the blast devicemay be swung up to an inoperative position asshown by dotted lines in said figure; and in order that when swung downagain to its operative position it will be prevented frommoving belowits proper point, a stop device 15 is fixed to the machine frame inposition to be engaged by the inner swinging portion of the pipe.

It will be manifest to the skilled mechanic that the various details ofthe mechanism as above described, may be modified and changed withoutdeparting from the spirit of the invention. For instance, the air pipeinstead of being provided with projecting nozzlcs'for the discharge ofthe air currents, may be formed with a continuous slit, or the pipemaybe provided with a line of holes therethrough; and the detailedformof the'cutter device may be variously modifiedgand likewise thevmanner of mounting the same, all of which changes and modifications willtall within the scope of the in 'vention, which in-its broader aspect-asre- Inn llO

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gardg the mechanism, involves the combina tion with means for severingthe adhering lead strip, of a fluid blast to direct the severed end ofthe strip to its proper path of travel.

Having thus described my invention, what I claim is:

1. In a paper making machine, the com bination of a rotary roll, atraveling member in position to receive the paper web from said roll, acutting device operable to sever a lead strip on the roll, and a fluidblast device associated with said cutting device and in position to blowon the severed end of the strip and opvating to carry it toward thetraveling member.

2. In a paper making machine, the combination of a rotary roll, atraveling member in position to receive the paper web from said roll, a-utting device operable to sever a lead strip on the roll, and a fluidblast device associated with said cutting deviw) and in position todirect its blast against the roll at a point above the smrered end ofthe strip, and at such angle that the blast in rebounding will acttocarry the strip toward the traveling member,

3. In a paper making machine, the com bination of a rotary roll, atraveling member in position to receive the paper web from said roll, acutting device operable to sever a lead strip on the roll, and fluidblast device associated with said cutting device and in position to soimpinge its blast against the roll, that the blast will rebound from theroll against the lead strip at an angle acute to its direction ofimpinge ment, and in a direction toward the traveling member. i

4. In a paper making machine, the combination of a rotary roll, atraveling memher in position to receive the paper web from the roll, acutting device operable to sever a lead strip on the roll along a lineoblique to the direction of travel of the strip, and in such positionthat the continued travel of the roll will carry the severed end of thestrip against the knife andlilf't said end from the roll, and a blastdevice associated with said cutting device and in position to impingeits blast against the roll at such point and in such direction, that theblast in rebounding will act on the lifted end of the strip and carrythe latter toward the traveling member. a

5. The method of establishing the travel o1": a paper web through apaper making machine, which consists in forming a lead strip on the web,severing the adhering leac strip on a rotary roll of the machine andlifting the severed end of said strip from the roll, directing a fluidblast against the'litted end of the strip to cause the strip to becarried by the blast to its proper path of travel, and when the travelof the lead. strip has been established, Widening said strip to the fullwidtn of the Web.

6. In a paper making machine, the combination of a rotary roll, atraveling member in position to receive the paper Web from said roll, acutting device operable to sever lead strip on the roll, a fluid blastdevice in position to act on the severed end of. the strip to carry ittoward the traveling member, and a supply pipe connected with the fluidblast device to supply fluid under pressure thereto, said supply pipebeing formed with a jointed coupling to enable the blast device to beswung to an inoperative position relative to the roll.

In testimony whereof I have affixed my signature hereto.

ROBERT E. READ.

